package mianshi.map;

import java.util.HashMap;
import java.util.LinkedHashMap;

public class MapDemo {

    public static void main(String[] args) {
        HashMap<String, Object> hashMap = new HashMap<>(10);
        hashMap.put("age", 10);

        hashMap.get("age");

        LinkedHashMap<String, Object> linkedHashMap = new LinkedHashMap<>();
        linkedHashMap.put("age", 10);
    }

}
